Study on Internal Fluid and Aerodynamic Noise Characteristics of Mine Local Fan
To further investigate the internal flow field and aerodynamic noise characteristics of local ventilation fans used in mining,the FBD type local axial mine ventilator was taken as the research object.Based on its three-dimensional modeling,the large eddy model and FW-H acoustic model were applied to numerically calculate its internal flow field and aerodynamic noise characteristics.The results show that there are significant similarities between vorticity distribution and aerodynamic noise distribution in the fan structure,and the aerodynamic noise is mainly distributed in the region with large vorticity variation.Therefore,the strategy of optimizing the leading edge of the first impeller and the trailing edge of the second impeller is proposed in order to provide certain reference for the optimization design of the fan in the future.
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